The Low Back Seamless Long Sleeve by Free People is another wardrobe staple. This top features a boat neckline and a low-cut open back making for a great layering piece Sizes: XS/S, M/L Available in Black and Dark Gull Gray. Fabric: 92% Nylon and 8% Elastane Fabric Care: Machine wash in cold water on a gentle cycle with like colors, and lay flat to dry